It is not about understanding, it is about not even trying to and just telling a complete stranger how you think they have it bad. That is, as you identified,

It is not about understanding, it is about not even trying to and just telling a complete stranger how you think they have it bad. That is, as you identified, a break of boundaries. And, frankly, if someone breaks into your house, you are not obligated to "understand" them. You just know they are shitty humans.